Portable hard drive have one purpose in mind, and that's to safely shuttle your data from point A to point B. That doesn't sound very glamorous, but even so, there's no rule that says external HDDs have to look drab. Silicon Power's new Stream S20 portable hard drive looks anything but with its sleek design and metallic purple paint job, which the company says "demonstrates its luxurious style" while "declaring its superiority" with performance to boot.